Since it'll be eons until we enjoy the kind of 4G coverage that we've grown used to on 2G (and to a lesser extent, 3G), manufacturers and carriers are hard at work making sure that we've got a reliable way to interoperate for the foreseeable future -- TeliaSonera, for instance, wants to swap out
its customers' modems for LTE / HSPA dual-mode versions once they're available next year. To that end, Ericsson and ST-Ericsson are trumpeting that they've become the first to establish "LTE and HSPA mobility" in accordance with 3GPP's Release 8 specification, which dictates this sort of stuff in a way everyone can agree on (that's a good thing). Verizon's naturally more interested in the CDMA handoffs
that have already gone down, but for AT&T and most of the rest of the world, this is exciting news indeed.